Patent US3200256A successfully refreshed from Google Patents.
US3200256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic commutation methods and systems therefor
Assignee: Individual
•
Filing: 1960-03-25
•
Granted: 1965-08-10
•
Expires: 1980-03-25
Abstract
No abstract record available.
Inventors
- 👤 David C Kalbfell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:48
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/80; H03K17/81
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
A COMMUTATING SYSTEM COMPRISING A FAMILY OF LINEAR MAGNETIC AMPLIFIERS EACH HAVING A PAIR OF CORES FORMED OF MAGNETIC MATERIAL HAVING HIGH MAXIMUM DIFFERENTIAL PERMEABILITY, EACH SAID AMPLIFIER HAVING INPUT, OUTPUT, AND FEEDBACK WINDINGS ON BOTH OF SAID CORES, EACH SAID AMPLIFIER HAVING A PAIR OF OPPOSITELY POLARIZED BIAS WINDINGS DISPOSED RESPECTIVELY ON SAID PAIR OF CORES, EACH SAID AMPLIFIER HAVING A PAIR OF OPPOSITELY POLARZIED CARRIER WINDINGS DISPOSED RESPECTIVELY ON SAID PAIR OF CORES, A COMMON OUTPUT TERMINAL CONNECTED TO THE OUTPUT WINDING OF EACH OF SAID AMPLIFIERS, MEANS INCLUDING THE BIAS WINDINGS OF EACH OF SAID AMPLIFIERS AND STATICALLY BIASING THE SAME IN THE REGION OF SATURATION OF SAID CORE MATERIAL AT ONE END OF THE B-H LOOP, MEANS FOR SEQUENTIALLY COUNTERBIASING THE STATIC BIAS AND SUPPLYING CARRIER CURRENT TO THE CARRIER WINDINGS OF EACH AMPLIFIER EACH IN SUCCESSIVE ORDER AND WITH AMPLITUDE SUFFICIENT TO PERIODICALLY SWEEP SAID CORE MATERIAL INTO SATURATION AT THE OTHER END OF THE B-H LOOP, GATE MEANS CONNECTED TO SAID OUTPUT TERMINAL AND OPERABLE AT THE SWEEP FREQUENCY OF SAID CARRIER CUR-
Claim 2
Dependent Claim
179 words
A COMMUTATING SYSTEM COMPRISING A FAMILY OF LINEAR MAGNETIC AMPLIFIERS EACH HAVING A PAIR OF CORES FORMED OF MAGNETIC MATERIAL HAVING HIGH MAXIMUM DIFFERENTIAL PERMEABILITY, EACH SAID AMPLIFIER HAVING INPUT, OUTPUT, AND FEEDBACK WINDINGS ON BOTH OF SAID CORES, EACH SAID AMPLIFIER HAVING A PAIR OF OPPOSITELY POLARIZED BIAS WINDINGS DISPOSED RESPECTIVELY ON SAID PAIR OF CORES, EACH SAID AMPLIFIER HAVING A PAIR OF OPPOSITELY POLARZIED CARRIER WINDINGS DISPOSED RESPECTIVELY ON SAID PAIR OF CORES, A COMMON OUTPUT TERMINAL CONNECTED TO THE OUTPUT WINDING OF EACH OF SAID AMPLIFIERS, MEANS INCLUDING THE BIAS WINDINGS OF EACH OF SAID AMPLIFIERS AND STATICALLY BIASING THE SAME IN THE REGION OF SATURATION OF SAID CORE MATERIAL AT ONE END OF THE B-H LOOP, MEANS FOR SEQUENTIALLY COUNTERBIASING THE STATIC BIAS AND SUPPLYING CARRIER CURRENT TO THE CARRIER WINDINGS OF EACH AMPLIFIER EACH IN SUCCESSIVE ORDER AND WITH AMPLITUDE SUFFICIENT TO PERIODICALLY SWEEP SAID CORE MATERIAL INTO SATURATION AT THE OTHER END OF THE B-H LOOP, GATE MEANS CONNECTED TO SAID OUTPUT TERMINAL AND OPERABLE AT THE SWEEP FREQUENCY OF SAID CARRIER CUR-
References Cited (Backward Citations)
US2424977A
Cited
US2574438A
Cited
US2825890A
Cited
US2850725A
Cited
US2972059A
Cited
US2834893A
Cited
US2931017A
Cited
US2972136A
Cited
US3032747A
Cited
US2828482A
Cited
US2862190A
Cited
US2861244A
Cited
US3054092A
Cited
US2978694A
Cited
US2989648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |